Preparation and Performance of Sr2-xPrxFe1.5Mo0.5O6-δ Cathode Materials for Solid Oxide Fuel Cell

被引：0
|
作者：
Wang P. [1 ]
Qian W. [1 ]
Chen Y. [1 ]
Cheng [1 ]
机构：
[1] School of Energy Materials and Chemical Engineering, Hefei University, Hefei
来源：
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2024年 / 42卷 / 03期
关键词：
cathode; double-perovskite structure; electrical properties; solid oxide fuel cells; Sr[!sub]2-x[!/sub]Pr[!sub]x[!/sub]Fe[!sub]1.5[!/sub]Mo[!sub]0.5[!/sub]O[!sub]6-δ[!/sub;
D O I：
10.11785/S1000-4343.20240308
中图分类号：
学科分类号：
摘要：
Cathode material of Sr2-xPrxFe1.5Mo0.5O6-δ(x=0~0.1)for solid oxide fuel cells(SOFCs)was prepared by solution combustion method. Its phase structure,electrochemical properties,chemical stability and thermal compatibility with electrolyte materials were studied. The results show that Sr2-xPrxFe1.5Mo0.5O6-δ has a typical double-perovskite structure when Sr element in Sr2Fe1.5Mo0.5O6 is partially replaced by Pr. There is a good chemical stability and a thermal expansion compatibility between Sr2-xPrxFe1.5Mo0.5O6-δ cathode and Ce0.8Gd0.2O1.9 electrolyte. The conductivity of Sr2-xPrxFe1.5Mo0.5O6-δ can be improved while the polarization resistance is reduced by doping with appropriate amount of Pr. The conductivity of Sr1.95Pr0.05Fe1.5Mo0.5O6-δ can reach the maximum value of 32.0 S·cm-1 at 450 ℃,while having the lowest polarization resistance of 0.266 Ω·cm2. Therefore,Sr2-xPrxFe1.5Mo0.5O6-δ can be used as a potential cathode material for medium temperature solid oxide fuel cells. © 2024 Editorial Office of Chinese Rare Earths. All rights reserved.
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页码：497 / 502
页数：5
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